package com.cdqidi.core.weixinmanager.service;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cdqidi.constant.ConstantDto;
import com.cdqidi.core.weixinmanager.domain.UserInfoDTO;
import com.cdqidi.core.weixinmanager.mapper.UserInfoMapper;
import com.cdqidi.core.weixinmanager.model.UserInfo;
import com.cdqidi.db.BaseService;
import com.cdqidi.dto.CacheKey;
import com.cdqidi.excel.ExcelExport;
import com.cdqidi.excel.util.ExportPage;
import com.cdqidi.exception.ApiException;
import com.cdqidi.util.RedisTemplateUtil;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Optional;

import static java.util.stream.Collectors.toList;


/**
 * 微信用户信息
 *
 * @author sjk
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class UserInfoService extends BaseService<UserInfoMapper, UserInfo> {

    private static final String PREFIX_ID = "sys_wx_UserInfo_openid_{0}";
    private static final String PREFIX_UNION_ID = "sys_wx_UserInfo_unionId_{0}_appId_{1}";

    private final RedisTemplateUtil<UserInfo> redisTemplateUtil;
    private final OrgWxConfigService orgWxConfigService;
    @Resource
    private HttpServletResponse response;

    /**
     * 保存
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public UserInfoDTO save(UserInfoDTO dto) {
        final UserInfo model = dtoToModel(dto);
        try {
            if (super.save(model)) {
                return modelToDto(model);
            }
            throw new ApiException("添加失败");
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 修改
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public UserInfoDTO update(UserInfoDTO dto) {
        final UserInfo historyModel = Optional.ofNullable(getById(dto.getOpenid())).orElseThrow(() -> new ApiException("ID不存在,不能更新"));
        final UserInfo model = dtoToModel(dto);
        try {
            if (!super.updateById(model)) {
                throw new ApiException("更新失败");
            }
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
            model.freeData();
        }
        return getByIdDto(dto.getOpenid());
    }

    /**
     * 删除，单个
     *
     * @param openid 主键
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeById(String openid) {
        final UserInfo model = Optional.ofNullable(getById(openid)).orElseThrow(() -> new ApiException("数据不存在,不能删除"));
        try {
            if (!super.removeById(openid)) {
                throw new ApiException("删除失败");
            }
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 根据传入对象构建查询参数，判断是否存在
     *
     * @param dto 参数
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExists(UserInfoDTO dto) {
        final QueryWrapper<UserInfo> queryWrapper = createQueryWrapper(dto);
        final boolean exists = super.count(queryWrapper) > 0;
        queryWrapper.clear();
        return exists;
    }

    /**
     * 根据主键判断数据是否存在
     *
     * @param openid 主键
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExistsById(String openid) {
        boolean exists = false;
        if (StringUtils.hasLength(openid)) {
            final UserInfo model = getById(openid);
            exists = (null != model);
            if (exists) {
                model.freeData();
            }
        }
        return exists;
    }

    /**
     * 根据主键获取数据
     *
     * @param openid 主键
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public UserInfo getById(String openid) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, openid);
        return redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getById(openid), UserInfo.class);
    }


    @Transactional(readOnly = true)
    public UserInfo getByUnionId(String unionId, String appId) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_UNION_ID, unionId, appId);
        return redisTemplateUtil.get(new CacheKey().setKey(key), () -> {
            QueryWrapper<UserInfo> queryWrapper = new QueryWrapper<>();
            queryWrapper.eq("union_id", unionId);
            queryWrapper.eq("appid", appId);
            UserInfo userInfo = super.getOne(queryWrapper, false);
            queryWrapper.clear();
            return userInfo;
        }, UserInfo.class);
    }

    /**
     * 根据主键获取数据
     *
     * @param openid 主键
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public UserInfoDTO getByIdDto(String openid) {
        return Optional.ofNullable(getById(openid)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public UserInfo getOne(UserInfoDTO dto) {
        final QueryWrapper<UserInfo> queryWrapper = createQueryWrapper(dto);
        UserInfo model = super.getOne(queryWrapper);
        queryWrapper.clear();
        return model;
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public UserInfoDTO getOneDto(UserInfoDTO dto) {
        return Optional.ofNullable(getOne(dto)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据
     */
    @Transactional(readOnly = true)
    public List<UserInfo> getList(UserInfoDTO dto) {
        final QueryWrapper<UserInfo> queryWrapper = createQueryWrapper(dto);
        final List<UserInfo> list = super.list(queryWrapper);
        queryWrapper.clear();
        return list;
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据，转换成页面对象
     */
    @Transactional(readOnly = true)
    public List<UserInfoDTO> getListDto(UserInfoDTO dto) {
        return modelToDtoList(getList(dto));
    }

    /**
     * 分页数据
     *
     * @param page 分页对象
     * @param dto  查询参数
     * @return 分页信息
     */
    @Transactional(readOnly = true)
    public IPage<UserInfoDTO> page(Page<UserInfo> page, UserInfoDTO dto) {
        final QueryWrapper<UserInfo> queryWrapper = createQueryWrapper(dto, "use.");
        final IPage<UserInfoDTO> iPage = baseMapper.page(page, queryWrapper);
        queryWrapper.clear();
        return iPage;
    }

    /**
     * 导出Excel
     *
     * @param query 查询条件
     */
    @Transactional(readOnly = true)
    public void export(UserInfoDTO query) {
        final ExportPage<UserInfo, UserInfoDTO> exportPage = new ExportPage<>();
        try {
            final List<UserInfoDTO> list = exportPage.getAllForPage(page -> page(page, query).getRecords());
            try {
                ExcelExport.downloadExcel(response, UserInfoDTO.class, () -> list);
                list.clear();
            } catch (IOException e) {
                log.error("导出失败", e);
                throw new ApiException("导出失败");
            }
        } finally {
            exportPage.freeData();
        }

    }

    /**
     * 清空缓存
     *
     * @param model 数据库对象
     */
    public void clearCache(UserInfo model) {
        if (null == model) {
            return;
        }
        redisTemplateUtil.deleteByKey(RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getOpenid()));
    }

    /**
     * 数据库对象转页面对象
     *
     * @param model 数据库对象
     * @return 页面对象
     */
    public UserInfoDTO modelToDto(UserInfo model) {
        if (null == model) {
            return null;
        }
        final UserInfoDTO dto = new UserInfoDTO();
        dto.setOpenid(model.getOpenid());
        dto.setSubscribe(model.getSubscribe());
        dto.setNickName(model.getNickName());
        dto.setCity(model.getCity());
        dto.setCountry(model.getCountry());
        dto.setProvince(model.getProvince());
        dto.setLanguage(model.getLanguage());
        dto.setHeadImgUrl(model.getHeadImgUrl());
        dto.setSubscribeTime(model.getSubscribeTime());
        dto.setUnionId(model.getUnionId());
        dto.setGroupId(model.getGroupId());
        dto.setStatus(model.getStatus());
        dto.setAddTime(model.getAddTime());
        dto.setUpdateTime(model.getUpdateTime());
        dto.setSex(model.getSex());
        dto.setSub(model.getSub());
        dto.setAppId(model.getAppId());
        buildDisplay(dto);
        return dto;
    }

    /**
     * 页面对象转数据库对象
     *
     * @param dto 页面对象
     * @return 数据库对象
     */
    public UserInfo dtoToModel(UserInfoDTO dto) {
        if (null == dto) {
            return null;
        }
        final UserInfo model = new UserInfo();
        model.setOpenid(dto.getOpenid());
        model.setSubscribe(dto.getSubscribe());
        model.setNickName(dto.getNickName());
        model.setCity(dto.getCity());
        model.setCountry(dto.getCountry());
        model.setProvince(dto.getProvince());
        model.setLanguage(dto.getLanguage());
        model.setHeadImgUrl(dto.getHeadImgUrl());
        model.setSubscribeTime(dto.getSubscribeTime());
        model.setUnionId(dto.getUnionId());
        model.setGroupId(dto.getGroupId());
        model.setStatus(dto.getStatus());
        model.setAddTime(dto.getAddTime());
        model.setUpdateTime(dto.getUpdateTime());
        model.setSex(dto.getSex());
        model.setSub(dto.getSub());
        model.setAppId(dto.getAppId());
        return model;
    }

    /**
     * 码表转换
     *
     * @param dto 页面对象
     */
    public void buildDisplay(UserInfoDTO dto) {
        dto.setAppIdDisplay(orgWxConfigService.idToDisplay(dto.getAppId()));
    }

    /**
     * 数据库对象转页面对象
     *
     * @param list 数据库对象
     * @return 页面对象
     */
    public List<UserInfoDTO> modelToDtoList(List<UserInfo> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::modelToDto).collect(toList());
    }

    /**
     * 页面对象转数据库对象
     *
     * @param list 页面对象
     * @return 数据库对象
     */
    public List<UserInfo> dtoToModelList(List<UserInfoDTO> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::dtoToModel).collect(toList());
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto 查询参数，不为空的属性会被自动加入
     */
    public QueryWrapper<UserInfo> createQueryWrapper(UserInfoDTO dto) {
        return createQueryWrapper(dto, "");
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto        查询参数，不为空的属性会被自动加入
     * @param tableAlias 表别名
     */
    public QueryWrapper<UserInfo> createQueryWrapper(UserInfoDTO dto, String tableAlias) {
        final QueryWrapper<UserInfo> queryWrapper = new QueryWrapper<>();
        if (null != dto) {
            if (StringUtils.hasLength(tableAlias) && tableAlias.charAt(tableAlias.length() - 1) != '.') {
                tableAlias += ".";
            }
            if (StringUtils.hasLength(dto.getNickName())) {
                queryWrapper.like(tableAlias + "nick_name", dto.getNickName());
            }
            if (StringUtils.hasLength(dto.getAppId())) {
                queryWrapper.like(tableAlias + "appid", dto.getAppId());
            }
            if (StringUtils.hasLength(dto.getSub())) {
                queryWrapper.like(tableAlias + "sub", dto.getSub());
            }
        }
        return queryWrapper;
    }

    /**
     * 批量检查主键在数据库中是否存在
     *
     * @param ids 主键集合
     */
    public void checkIds(List<String> ids) {
        if (null == ids || ids.isEmpty()) {
            return;
        }
        final List<UserInfo> list = super.listByIds(ids);
        if (list.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(ids.toArray()));
        }
        final List<String> notExistsList = ids.stream().filter(id -> !list.stream().map(UserInfo::getOpenid).collect(toList()).contains(id)).collect(toList());
        if (!notExistsList.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(notExistsList.toArray()));
        }
    }
}